Public Advisory for HURRICANE HILDA

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HURRICANE HILDA ADVISORY NUMBER 23

Issued: 500 AM HST TUE AUG 11 2015

Hilda gradually weakening and drawing closer to Hawaii

Tropical storm watch issued for Hawaii county

SUMMARY OF 500 AM HST...1500 UTC...INFORMATION

LOCATION: 17.5N 151.3W
ABOUT 290 MI: 470 KM ESE OF HILO HAWAII
ABOUT 505 MI: 810 KM ESE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS: 85 MPH: 140 KM/H
PRESENT MOVEMENT: NW OR 315 DEGREES AT 7 MPH: 11 KM/H
MINIMUM CENTRAL PRESSURE: 985 MB or 29.09 INCHES

DISCUSSION AND 48-HOUR OUTLOOK

At 500 am HST, 1500 UTC, the center of hurricane Hilda was located near latitude 17.5 north, longitude 151.3 west. Hilda is moving toward the northwest near 7 mph, 11 km/h, and this general motion is expected to continue into Thursday.

Maximum sustained winds are near 85 mph, 140 km/h, with higher gusts. Steady weakening is expected over the next 48 hours, with Hilda forecast to weaken to a tropical storm by tonight.

Hurricane force winds extend outward up to 25 miles, 35 km, from the center, and tropical storm force winds extend outward up to 70 miles, 110 km.

The estimated minimum central pressure is 985 mb, 29.09 inches.

HAZARDS AFFECTING LAND

SURF

Swells associated with hurricane Hilda will produce large and potentially life threatening surf along east and southeast facing shores of portions of the Hawaiian islands over the next couple of days.

RAINFALL

Hilda is expected to produce very heavy rain over portions of the Hawaiian islands from late Wednesday into the weekend. These rains could cause life threatening flash floods and mudslides.

NEXT ADVISORY
NEXT INTERMEDIATE ADVISORY...800 AM HST.
NEXT COMPLETE ADVISORY...1100 AM HST.

$$

FORECASTER BIRCHARD